Tuesday, 31 March 2015

NZ120 40 Ton Craven Steam Crane - Part one.

Showing a new design challenge, a Craven Steam crane in nz120 but with working pistons, driven when the hook is raised or lowered. In the rear their should be room enough for 2 motors.
 While not yet finished in the design stage some pictures are being posted on whats been done so far.
The wheels for the chassis I had considering using the driving wheels from a n scale bachman locomotive(grandad would approve of this!), I could fit 1 at both ends, where it would be visible & pull off the look.
For more info & pictures on the crane itself, check out http://www.nzrcranes.org/gallery.html

So, to make things work, we start to wander into lego territory..
Showing the gears in all their glory. I have an idea of using a tiny motor from an eftpos printer, should be able to fit 2 in the rear near the waiting gears. if that fails then manual operation it is..
The blue dots are designed to enable the axle to click in & remain there without any gluing brackets. Also enabling them to be pushed out for painting etc. Thats the theory im workin on anyway.. The parts will need to be left in the sun to harden under the UV goodness. I'm expecting things to snap, hence the "probably not thick enough" axles.
Meshing of the worm to the gear. The boiler, cab & counter weights will be a seperate shell, similar to the coal grab crane will fit on snug enough to not require screwing together.
Credits http://www.nzrcranes.org/gallery.html

More to come...


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